| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.2 | 36.3 | 47.2 | 58.2 | 67.0 | 76.7 | 85.4 | 85.0 | 74.9 | 61.9 | 43.2 | 32.1 | 58.2 |
| Highest Mean Max. Temperature (F) | 40.4 | 50.7 | 59.4 | 67.3 | 78.5 | 82.9 | 92.2 | 91.8 | 85.4 | 73.2 | 53.7 | 40.2 | 92.2 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1974 | 1994 | 1994 | 1990 | 1988 | 1999 | 1976 | 1994 |
| Lowest Mean Max. Temperature (F) | 21.5 | 24.1 | 34.8 | 47.8 | 62.0 | 70.6 | 76.8 | 78.7 | 65.5 | 54.8 | 32.6 | 21.7 | 21.5 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1977 | 1998 | 1993 | 1976 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 22.2 | 27.4 | 36.6 | 45.0 | 53.2 | 61.3 | 68.5 | 67.8 | 58.4 | 47.0 | 33.3 | 23.8 | 45.4 |
| Highest Mean Temperature (F) | 31.4 | 37.7 | 44.0 | 50.2 | 60.9 | 66.3 | 72.9 | 72.9 | 66.4 | 54.8 | 40.9 | 31.6 | 72.9 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1992 | 1998 | 1991 | 1990 | 1988 | 1999 | 1980 | 1991 |
| Lowest Mean Temperature (F) | 13.4 | 15.2 | 26.0 | 38.9 | 49.5 | 56.6 | 60.8 | 63.0 | 51.8 | 42.0 | 24.0 | 12.8 | 12.8 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1975 | 1998 | 1993 | 1976 | 1985 | 1984 | 1985 | 1985 | 1985 |
| Mean Min. Temperature (F) | 14.1 | 18.5 | 26.0 | 31.7 | 39.3 | 45.8 | 51.6 | 50.5 | 41.9 | 32.0 | 23.4 | 15.4 | 32.5 |
| Highest Mean Min. Temperature (F) | 22.4 | 25.4 | 31.2 | 35.5 | 44.5 | 49.9 | 56.8 | 55.2 | 49.2 | 36.4 | 29.2 | 23.1 | 56.8 |
| Year Highest Occurred | 1983 | 1992 | 1983 | 1990 | 1993 | 1977 | 1985 | 1984 | 1998 | 1988 | 1981 | 1981 | 1985 |
| Lowest Mean Min. Temperature (F) | 5.1 | 6.4 | 17.3 | 29.0 | 35.2 | 41.9 | 44.9 | 45.9 | 37.7 | 28.7 | 14.1 | 1.2 | 1.2 |
| Year Lowest Occurred | 1989 | 1985 | 1985 | 1982 | 1999 | 1991 | 1993 | 1975 | 1971 | 1976 | 1993 | 1990 | 1990 |
| Mean Precipitation (in.) | 1.62 | 1.28 | 1.14 | 0.73 | 1.07 | 0.64 | 0.37 | 0.32 | 0.58 | 0.72 | 1.32 | 1.38 | 11.17 |
| Highest Precipitation (in.) | 3.97 | 4.64 | 2.78 | 1.51 | 2.83 | 2.08 | 1.54 | 1.28 | 1.75 | 2.03 | 4.33 | 4.03 | 4.64 |
| Year Highest Occurred | 1980 | 1986 | 1975 | 1990 | 1995 | 1998 | 1982 | 1976 | 1978 | 1989 | 1988 | 1983 | 1986 |
| Lowest Precipitation (in.) | 0.05 | 0.02 | 0.03 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1992 | 1988 | 1992 | 1977 | 1992 | 2000 | 2000 | 2000 | 1999 | 1988 | 1976 | 1989 | 1992 |
| Heating Degree Days (F) | 1328. | 1054. | 881. | 601. | 373. | 157. | 44. | 57. | 234. | 561. | 952. | 1279. | 7521. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 44. | 152. | 144. | 36. | 0. | 0. | 0. | 382. |